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Old 06-16-2008, 01:12 PM
2000CAYukon 2000CAYukon is offline
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Re: weird idle stall issue 1990 suburban 350 FI TBI

Quote:
Originally Posted by hkellogg
would a bad pickup coil really cause low idle ? I figured i'd be looking at vacuum issues somewhere or bad injectors I mean wouldn't a bad pickup cause a misfire condition
It can cause a low idle but yes you would probably feel a misfire.

If you have access to a scan tool, you should see if the Engine Coolant Temp sensor is correct. Also see if the MAP sensor is holding a vacuum.

Fuel pressure should be 9 - 13 PSI; however, you need a special tool to test it.

//2000CAYukon
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